WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 407118

CAS#: 487020-03-1

Description: HI-TOPK-032 is a potent and selective TOPK inhibitor. In vitro, HI-TOPK-032 strongly suppressed TOPK kinase activity but had little effect on extracellular signal–regulated kinase 1 (ERK1), c-jun—NH2—kinase 1, or p38 kinase activities. HI-TOPK-032 also inhibited anchorage-dependent and -independent colon cancer cell growth by reducing ERK-RSK phosphorylation as well as increasing colon cancer cell apoptosis through regulation of the abundance of p53, cleaved caspase-7, and cleaved PARP. In vivo, administration of HI-TOPK-032 suppressed tumor growth in a colon cancer xenograft model. HI-TOPK-032 may be further developed as a potential therapeutic against colorectal cancer. The serine-threonine mitogen-activated protein kinase kinase family member T-LAK cell–originated protein kinase (TOPK/PBK) is heavily involved in tumor development, cancer growth, apoptosis, and inflammation ( Cancer Res; 72(12); 3060–8.).

Chemical Structure

CAS# 487020-03-1

Theoretical Analysis

MedKoo Cat#: 407118
Name: HI-TOPK-032
CAS#: 487020-03-1
Chemical Formula: C20H11N5OS
Exact Mass: 369.06843
Molecular Weight: 369.2
Elemental Analysis: C, 65.03; H, 3.00; N, 18.96; O, 4.33; S, 8.68

Price and Availability

Size Price Availability Quantity
5.0mg USD 240.0 2 Weeks
25.0mg USD 600.0 2 Weeks
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Synonym: HI-TOPK-032; HI-TOPK032; HI-TOPK 032.

IUPAC/Chemical Name: N-(12-cyanoindolizino[2,3-b]quinoxalin-2-yl)thiophene-2-carboxamide


InChi Code: InChI=1S/C20H11N5OS/c21-11-13-16-10-12(22-20(26)17-6-3-9-27-17)7-8-25(16)19-18(13)23-14-4-1-2-5-15(14)24-19/h1-10H,(H,22,26)


Appearance: Solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO, not in water

Shelf Life: >2 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

Preparing Stock Solutions

The following data is based on the product molecular weight 369.2 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

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1: Joel M, Mughal AA, Grieg Z, Murrell W, Palmero S, Mikkelsen B, Fjerdingstad HB, Sandberg CJ, Behnan J, Glover JC, Langmoen IA, Stangeland B. Targeting PBK/TOPK decreases growth and survival of glioma initiating cells in vitro and attenuates tumor growth in vivo. Mol Cancer. 2015 Jun 17;14(1):121. doi: 10.1186/s12943-015-0398-x. PubMed PMID: 26081429; PubMed Central PMCID: PMC4470057.

2: Kim DJ, Li Y, Reddy K, Lee MH, Kim MO, Cho YY, Lee SY, Kim JE, Bode AM, Dong Z. Novel TOPK inhibitor HI-TOPK-032 effectively suppresses colon cancer growth. Cancer Res. 2012 Jun 15;72(12):3060-8. doi: 10.1158/0008-5472.CAN-11-3851. Epub 2012 Apr 20. PubMed PMID: 22523035.